The Australian standard AS2759, requires that the minimum design factor for Steel Wire Ropes under general conditions (Safety Factors (SF)) is  λ = 4 for stationary rope and λ = 5 for running rope.

The below picture is a puzzle which illustrates the safety factors to be considered for steel wire ropes.

Contact AAAO-EC if you have any queries in regards to the SWR or  winches.